US3689408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pool cleaner
Assignee: Swimrite Inc
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Filing: 1971-03-15
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Granted: 1972-09-05
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Expires: 1991-03-15
Abstract
Abstract AB A swimming pool cleaner comprising a car having two turbine-driven rear wheels and a steerable front wheel guided on an endless track in the form of a weighted tube resting on the bottom of the pool. Water under pressure from the pool circulation system is delivered to the turbine to drive the rear wheels, and exits through two elongated sweep hoses which direct the water in jets into the pool.
Inventors
- 👤 James R Edmiston
- 👤 Harry M Clinton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:17
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1681
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |